For example, first, Watt improved the steam generator. This is a historical event, which triggered the first industrial revolution in Britain. The industrial revolution that started in Britain began to spread to the European continent and the American continent, which made people transition from agricultural production to the era of mass production of machines, thus opening the curtain of modern industry. ...

The so-called historical position is to think about the influence and significance of this matter at that time, and to consider it in the historical trend, to write about its influence on people and things before it, and to write about its influence on people and things after it. (For example, there are many works that happened in the Ming Dynasty, which are summaries of the previous dynasties and have academic research functions for later generations. "No one has ever been here" is a good word to describe a person.